Improvement in stills for coal-oils



S. G. CLARK.

Oil Stili.

No. 34,816. Patented Apr. 1. 1862.

Witnesses:

,\ lnv'ent or.

AM. PHOTO'UTHO-CO. NY. (0 SBORNES PROCESS) fication, in which- UNITEDSTATES PATENT OFFICE S. G. CLARK, OF CLEVELAND, OHIO.

lMPROVEMENT lN STILLS FOR COAL-OILS.

Specification forming part of Letters PatentNo. 34,8 16, dated April 1,1862.

To all whom it may concern.-

Be it known that I, S. G. CLARK, of Cleveland, in the county of Ouyahogaand State of Ohio, have invented new and useful Improvements inOilStills; and I do hereby declare that the following is a full andcomplete description of the construction and operation of the same,reference being had to the accompanying drawings, making part of thisspeci- Figure 1 is a top view. Fig. 2 is aside View. Fig. 3 is an endview, and Fig. I is a longitudinal vertical section.

Like letters refer to like parts in the several views.

The nature of my invention relates to such a construction of apparatusthat the lighter products of mineral or hydrocarbon oils may be firstseparated; second, the separation of the more dense or less volatileoils; and, third, in devices for using the residue for fuel during theprocess, and all without the necessity of handling any of the productsduring the 1 process of distillation, the same being continuous duringthe pleasure of the operator.

The crude oil to be operated upon is first I placed in the tank A, fromwhence it flows through the pipe A into the retort B. This flow isregulated by means of a valve, A, which is operated by the float B andthe beam B thus always insuring a uniform quantity of oil in the retortB. It is in this retort that the first distillation takes place, andthis is accomplished by means of steam, which is introduced ipto theretort through the pipe 0 O and discharged directly into the crude oil.The lighter portions of the oil are here volatilized and pass off withthe steam through the beak D, and are condensed in the condensin g-pipeD and collected in the tank D, where the oil and water separate by meansof their different specific gravities. The oil remaining in the retort,or that which is not volatilized by the action of the steam,flowsthrough the pipe E, which runs horizontally through the fiue F into theretort G, which is constructed in a manner similar to a single fluesteam-boiler. The pipe E turns upward and discharges at E into thetrough E placed upon the top of the flue F, consequently the oilsupplied to the retort G by passing through the pipe E within the flue Facquires a temperature nearly'or quite equal to that contained in theretort G. The beak of the retort G is represented at G,and which leadsto the coudensingworm Gflwhere the condensa tion of the seconddistillation takes place.

H is the fire-box, and H is the passage or flue for the flame and heatbeneath the retort G to the flue F. The fire-box H is provided withconcave or trough-like grates Hfiwhich are supplied with the distillateor heavy oil which flows out from the retort at I up the pipe I andthrough passages P into the tank K, whence it flows into the grates Hthe flow being regulated by means of the stop-cock L. As the residuumwill not burn until it has been elevated to a certain degree oftemperature, I provide for starting the fire inthe firebox by means ofthe light and inflammable oil conveyed thither from the tank D through aseries of tubes, M, and, if desirable, a portion of this light oil canbe constantly burned with the residue from the tank K. The smoke andgases from the burning oil are carried ofi' by the stack N.

By means of the herein-described arrangement of the several parts acontinuous process of distillation can be pursued without the necessityfor stopping in order to remove the residue from the retort G, for thisis continually accomplished by the means before described, and byincreasing or diminishing the flow of oil through the still the quantityand quality of the product can be regulated.

\Vhat I claim as my improvement, and desire to secure by Letters Patent,is-

.1. The herein-described combination of the steam-retort B with thefire-heat retort G, ar ranged and operating as and for the purposespecified.

2. The herein-described devices for the continuous discharge of theresiduum and the burning of the same, as and for the purpose herein setforth.

S. G. CLARK.

XVitn esses:

W. H. BURRIDGE, HENRY VOTH.

